cop2.h (1505B)
1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2009 Wind River Systems, 7 * written by Ralf Baechle <ralf@linux-mips.org> 8 */ 9#ifndef __ASM_COP2_H 10#define __ASM_COP2_H 11 12#include <linux/notifier.h> 13 14#if defined(CONFIG_CPU_CAVIUM_OCTEON) 15 16extern void octeon_cop2_save(struct octeon_cop2_state *); 17extern void octeon_cop2_restore(struct octeon_cop2_state *); 18 19#define cop2_save(r) octeon_cop2_save(&(r)->thread.cp2) 20#define cop2_restore(r) octeon_cop2_restore(&(r)->thread.cp2) 21 22#define cop2_present 1 23#define cop2_lazy_restore 1 24 25#elif defined(CONFIG_CPU_LOONGSON64) 26 27#define cop2_present 1 28#define cop2_lazy_restore 1 29#define cop2_save(r) do { (void)(r); } while (0) 30#define cop2_restore(r) do { (void)(r); } while (0) 31 32#else 33 34#define cop2_present 0 35#define cop2_lazy_restore 0 36#define cop2_save(r) do { (void)(r); } while (0) 37#define cop2_restore(r) do { (void)(r); } while (0) 38#endif 39 40enum cu2_ops { 41 CU2_EXCEPTION, 42 CU2_LWC2_OP, 43 CU2_LDC2_OP, 44 CU2_SWC2_OP, 45 CU2_SDC2_OP, 46}; 47 48extern int register_cu2_notifier(struct notifier_block *nb); 49extern int cu2_notifier_call_chain(unsigned long val, void *v); 50 51#define cu2_notifier(fn, pri) \ 52({ \ 53 static struct notifier_block fn##_nb = { \ 54 .notifier_call = fn, \ 55 .priority = pri \ 56 }; \ 57 \ 58 register_cu2_notifier(&fn##_nb); \ 59}) 60 61#endif /* __ASM_COP2_H */